有限反馈波束成形中继系统性能分析

doi:10.13190/jbupt.201004.140.liuzh

北京邮电大学学报 ›› 2010, Vol. 33 ›› Issue (4): 140-144.doi: 10.13190/jbupt.201004.140.liuzh

• 研究报告 • 上一篇

有限反馈波束成形中继系统性能分析

刘臻, 王晓湘, 张鸿涛, 宋振峰

泛网无线通信教育部重点实验室（北京邮电大学），北京 100876

出版日期:2010-08-28 发布日期:2010-08-28
通讯作者: 刘臻 liuzhenbupt@gmail.com E-mail:liuzhenbupt@gmail.com

Performance Analysis of Relay Networks Based on Limited Feedback Beamforming

LIU Zhen, WANG Xiao-Xiang, ZHANG Hong-Chao, SONG Zhen-Feng

Key Laboratory of University Wireless Communication(Beijing University of Posts and Telecommunication),Ministry of Education,Beijing 100876,China

Online:2010-08-28 Published:2010-08-28

摘要/Abstract

摘要：

为研究量化反馈对多天线中继系统性能的影响，推导出中继采用有限反馈波束成形转发信号时系统的终端概率和容量.计算出终端接收信噪比的矩母函数，再利用拉氏逆变换获得系统的中继概率，基于Jensen不等式推导出容量的理论上界，利用数值仿真对理论退到结果进行了验证.仿真结果表明，有限反馈波束成形可以很好地实现性能和反馈量的折中，且随着天线数和反馈量的增加，系统性能会得到提高.

关键词: 中继, 波束成形, 中继概率, 容量

Abstract:

To analyze the impact of quantized feedback on multi-antenna relay system, the letter derives the outage probability and capacity of relay system,which retransmits signal by using limited feedback beamforming. First, we derive the moment generation function of received signal-to-noise ratio and achieve the outage probability by using inverse Laplace transform. Second, we derive the capacity upper bound based on Jensen's inequality. Finally, Numerial results are given to verify feedvack beamforming could achieve the tradeoff between and feedbacks. The system performance can be improved by the increase of antenna numbers and feedback bits.

Key words: relay, beamforming, outage probability, capacity

中图分类号:

TN911.22

刘臻, 王晓湘, 张鸿涛, 宋振峰. 有限反馈波束成形中继系统性能分析[J]. 北京邮电大学学报, 2010, 33(4): 140-144.

LIU Zhen, WANG Xiao-Xiang, ZHANG Hong-Chao, SONG Zhen-Feng. Performance Analysis of Relay Networks Based on Limited Feedback Beamforming[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2010, 33(4): 140-144.

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有限反馈波束成形中继系统性能分析

Performance Analysis of Relay Networks Based on Limited Feedback Beamforming

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